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pV Conventional Frame Sync and pV Tweaks; #122

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lwvmobile
2023-05-05 06:34:42 -04:00
parent 402b2f0264
commit 3aa20f82b9
7 changed files with 423 additions and 461 deletions
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88
src/dsd_frame_sync.c
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@@ -1454,6 +1454,94 @@ getFrameSync (dsd_opts * opts, dsd_state * state)
}
#endif //NXDN Sync Type Selection
//Provoice Conventional -- Some False Positives due to shortened frame sync pattern, so use squelch if possible
#ifdef PVCONVENTIONAL
if (opts->frame_provoice == 1)
{
memset (synctest32, 0, sizeof(synctest32));
strncpy (synctest32, (synctest_p - 31), 16); //short sync grab here on 32
char pvc_txs[9]; //string (symbol) value of TX Address
char pvc_rxs[9]; //string (symbol) value of RX Address
uint8_t pvc_txa = 0; //actual value of TX Address
uint8_t pvc_rxa = 0; //actual value of RX Address
strncpy (pvc_txs, (synctest_p - 15), 8); //copy string value of TX Address
strncpy (pvc_rxs, (synctest_p - 7), 8); //copy string value of RX Address
if ((strcmp (synctest32, INV_PROVOICE_CONV_SHORT) == 0))
{
if (state->lastsynctype == 15) //use this condition, like NXDN, to migitage false positives due to short sync pattern
{
state->carrier = 1;
state->offset = synctest_pos;
state->max = ((state->max) + lmax) / 2;
state->min = ((state->min) + lmin) / 2;
sprintf (state->ftype, "ProVoice ");
// fprintf (stderr, "Sync Pattern = %s ", synctest32);
// fprintf (stderr, "TX = %s ", pvc_txs);
// fprintf (stderr, "RX = %s ", pvc_rxs);
for (int i = 0; i < 8; i++)
{
pvc_txa = pvc_txa << 1;
pvc_rxa = pvc_rxa << 1;
//symbol 1 is binary 1 on inverted
//I hate working with strings, has to be a better way to evaluate this
memset (pvc_txs, 0, sizeof (pvc_txs));
memset (pvc_rxs, 0, sizeof (pvc_rxs));
strncpy (pvc_txs, (synctest_p - 15+i), 1);
strncpy (pvc_rxs, (synctest_p - 7+i), 1);
if ((strcmp (pvc_txs, "1") == 0))
pvc_txa = pvc_txa + 1;
if ((strcmp (pvc_rxs, "1") == 0))
pvc_rxa = pvc_rxa + 1;
}
printFrameSync (opts, state, "-PV_C ", synctest_pos + 1, modulation);
fprintf (stderr, "TX: %d ", pvc_txa);
fprintf (stderr, "RX: %d ", pvc_rxa);
if (pvc_txa == 172) fprintf (stderr, "ALL CALL ");
state->lastsynctype = 15;
return (15);
}
state->lastsynctype = 15;
}
else if ((strcmp (synctest32, PROVOICE_CONV_SHORT) == 0))
{
if (state->lastsynctype == 14) //use this condition, like NXDN, to migitage false positives due to short sync pattern
{
state->carrier = 1;
state->offset = synctest_pos;
state->max = ((state->max) + lmax) / 2;
state->min = ((state->min) + lmin) / 2;
sprintf (state->ftype, "ProVoice ");
// fprintf (stderr, "Sync Pattern = %s ", synctest32);
// fprintf (stderr, "TX = %s ", pvc_txs);
// fprintf (stderr, "RX = %s ", pvc_rxs);
for (int i = 0; i < 8; i++)
{
pvc_txa = pvc_txa << 1;
pvc_rxa = pvc_rxa << 1;
//symbol 3 is binary 1 on positive
//I hate working with strings, has to be a better way to evaluate this
memset (pvc_txs, 0, sizeof (pvc_txs));
memset (pvc_rxs, 0, sizeof (pvc_rxs));
strncpy (pvc_txs, (synctest_p - 15+i), 1);
strncpy (pvc_rxs, (synctest_p - 7+i), 1);
if ((strcmp (pvc_txs, "3") == 0))
pvc_txa = pvc_txa + 1;
if ((strcmp (pvc_rxs, "3") == 0))
pvc_rxa = pvc_rxa + 1;
}
printFrameSync (opts, state, "+PV_C ", synctest_pos + 1, modulation);
fprintf (stderr, "TX: %d ", pvc_txa);
fprintf (stderr, "RX: %d ", pvc_rxa);
if (pvc_txa == 172) fprintf (stderr, "ALL CALL ");
state->lastsynctype = 14;
return (14);
}
state->lastsynctype = 14;
}
}
#endif //End Provoice Conventional
} // t >= 10
if (exitflag == 1)